Patent · US Expired

Start/end point detection for word recognition

US5794195A · kind A · utility

27Cited by

12References

15Claims

0Family size

Assignee

Alcatel N.V. · NL

Inventors

Thomas Hormann · Bornsteiner Straße, DE
Gregor Rozinaj · Stuttgart, DE

Key dates

Filing date	May 12, 1997
Grant date	Aug 11, 1998
Priority date	—
Expiry date	May 12, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG10L2025/783
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

During speech recognition of words, a precise and strong detection of start/end points of the words must be ensured, even in very noisy surroundings. Use of a feature with noise-resistant properties is shown wherein for a feature vector, a function of the signal energy is formed as the first feature and a function of the quadratic difference of an LPC (Linear-Predictive-Coding) cepstrum coefficient as a second feature. A check quantity or a maximum function of a distribution function is calculated, which detects the start/end points by comparison with a threshold.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.